Advocate staff photo by HILARY SCHEINUK -- The East Baton Rouge Parish Sheriff's office is investigating an early morning armed robbery, Saturday, August 22, 2015. The robbery occurred at the Whitney Bank located at 8778 Bluebonnet Blvd around 9:40am.

Advocate staff photo by HILARY SCHEINUK -- The East Baton Rouge Parish Sheriff's office is investigating an early morning armed robbery, Saturday, August 22, 2015. The robbery occurred at the Whitney Bank located at 8778 Bluebonnet Blvd around 9:40am.

Advocate staff photo by HILARY SCHEINUK -- The East Baton Rouge Parish Sheriff's office is investigating an early morning armed robbery, Saturday, August 22, 2015. The robbery occurred at the Whitney Bank located at 8778 Bluebonnet Blvd around 9:40am.

Baton Rouge authorities are searching for man who robbed a Whitney Bank on Bluebonnet Boulevard in Baton Rouge on Saturday morning. He's described as a black man wearing a white hat with black writing, a gray or light-colored shirt and jeans. He fled the bank in a small gray sedan, possibly a Volkswagen Jetta.

Baton Rouge authorities are searching for man who robbed a Whitney Bank on Bluebonnet Boulevard in Baton Rouge on Saturday morning. He's described as a black man wearing a white hat with black writing, a gray or light-colored shirt and jeans. He fled the bank in a small gray sedan, possibly a Volkswagen Jetta.

Baton Rouge authorities are searching for man who robbed a Whitney Bank on Bluebonnet Boulevard in Baton Rouge on Saturday morning. He's described as a black man wearing a white hat with black writing, a gray or light-colored shirt and jeans. He fled the bank in a small gray sedan, possibly a Volkswagen Jetta.

Baton Rouge authorities are searching for man who robbed a Whitney Bank on Bluebonnet Boulevard in Baton Rouge on Saturday morning. He's described as a black man wearing a white hat with black writing, a gray or light-colored shirt and jeans. He fled the bank in a small gray sedan, possibly a Volkswagen Jetta.

Police suspect same man behind three armed robberies of Baton Rouge area businesses over past two days

Police suspect same man in all incidents

Advocate staff photo by HILARY SCHEINUK -- The East Baton Rouge Parish Sheriff's office is investigating an early morning armed robbery, Saturday, August 22, 2015. The robbery occurred at the Whitney Bank located at 8778 Bluebonnet Blvd around 9:40am.

Advocate staff photo by HILARY SCHEINUK -- The East Baton Rouge Parish Sheriff's office is investigating an early morning armed robbery, Saturday, August 22, 2015. The robbery occurred at the Whitney Bank located at 8778 Bluebonnet Blvd around 9:40am.

Advocate staff photo by HILARY SCHEINUK -- The East Baton Rouge Parish Sheriff's office is investigating an early morning armed robbery, Saturday, August 22, 2015. The robbery occurred at the Whitney Bank located at 8778 Bluebonnet Blvd around 9:40am.

Baton Rouge authorities are searching for man who robbed a Whitney Bank on Bluebonnet Boulevard in Baton Rouge on Saturday morning. He's described as a black man wearing a white hat with black writing, a gray or light-colored shirt and jeans. He fled the bank in a small gray sedan, possibly a Volkswagen Jetta.

Baton Rouge authorities are searching for man who robbed a Whitney Bank on Bluebonnet Boulevard in Baton Rouge on Saturday morning. He's described as a black man wearing a white hat with black writing, a gray or light-colored shirt and jeans. He fled the bank in a small gray sedan, possibly a Volkswagen Jetta.

Baton Rouge authorities are searching for man who robbed a Whitney Bank on Bluebonnet Boulevard in Baton Rouge on Saturday morning. He's described as a black man wearing a white hat with black writing, a gray or light-colored shirt and jeans. He fled the bank in a small gray sedan, possibly a Volkswagen Jetta.

Baton Rouge authorities are searching for man who robbed a Whitney Bank on Bluebonnet Boulevard in Baton Rouge on Saturday morning. He's described as a black man wearing a white hat with black writing, a gray or light-colored shirt and jeans. He fled the bank in a small gray sedan, possibly a Volkswagen Jetta.

The Sheriff’s Office and Baton Rouge Police Department were on the hunt Saturday for an armed robber they believe held up three businesses over a two-day span in the Baton Rouge area.

A Whitney Bank on Bluebonnet Boulevard and a Circle K on Highland Road in Baton Rouge were robbed at gunpoint Saturday morning, and the Subway on West State Street just north of LSU’s campus was held up Friday morning.

“We are working together to see if it is indeed the same guy,” Baton Rouge police spokesman L’Jean McKneely said Saturday.

The East Baton Rouge Parish Sheriff’s Office said a man walked into the bank around 9:40 a.m. Saturday armed with a “short-barrel old-looking revolver” and fled with an undisclosed amount of cash.

Meanwhile, Baton Rouge police reported that a man walked into the Circle K with a handgun earlier on Saturday, about 3:50 a.m., and demanded money from the store clerk.

In all three robberies, witnesses say a black man wearing a white hat, a light-colored shirt and jeans fled the scene in a gray, four-door sedan, possibly a Volkswagen Jetta.

The Sheriff’s Office and Baton Rouge police said investigators think all three holdups are connected based on the descriptions provided of the armed robber.

Baton Rouge police offered a more detailed description of the man believed to have robbed the Circle K, saying he was black, about 5-feet, 6-inches tall, weighing 170 pounds and wearing a white ball cap; a gray, short-sleeved shirt; blue jeans; and dark shoes.

McKneely urged residents to exercise caution while out shopping and to not try to approach a suspicious man fitting the robber’s description if spotted.

“Don’t try to stop him,” McKneely said. “Don’t try to detain him in any way. Get out of his way, and call for us.”